CN110029203A - A kind of manufacturing method of ultrapure nuclear leve austenitic stainless steel large forgings - Google Patents
A kind of manufacturing method of ultrapure nuclear leve austenitic stainless steel large forgings Download PDFInfo
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- CN110029203A CN110029203A CN201910103260.4A CN201910103260A CN110029203A CN 110029203 A CN110029203 A CN 110029203A CN 201910103260 A CN201910103260 A CN 201910103260A CN 110029203 A CN110029203 A CN 110029203A
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- 238000005242 forging Methods 0.000 title claims abstract description 56
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 23
- 229910000963 austenitic stainless steel Inorganic materials 0.000 title claims abstract description 22
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 65
- 239000010959 steel Substances 0.000 claims abstract description 65
- 238000000034 method Methods 0.000 claims abstract description 29
- 239000002994 raw material Substances 0.000 claims abstract description 22
- 230000008569 process Effects 0.000 claims abstract description 15
- 238000010438 heat treatment Methods 0.000 claims abstract description 13
- 238000002844 melting Methods 0.000 claims abstract description 10
- 230000008018 melting Effects 0.000 claims abstract description 10
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 10
- 238000007670 refining Methods 0.000 claims abstract description 9
- 230000033228 biological regulation Effects 0.000 claims abstract description 7
- 230000006641 stabilisation Effects 0.000 claims abstract description 6
- 238000011105 stabilization Methods 0.000 claims abstract description 6
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 6
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 5
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 5
- 230000001105 regulatory effect Effects 0.000 claims abstract description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 18
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 14
- 239000010936 titanium Substances 0.000 claims description 9
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 6
- 229910052698 phosphorus Inorganic materials 0.000 claims description 6
- 229910052742 iron Inorganic materials 0.000 claims description 5
- 229910052759 nickel Inorganic materials 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 claims description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 3
- 230000008520 organization Effects 0.000 claims description 3
- 230000003647 oxidation Effects 0.000 claims description 3
- 238000007254 oxidation reaction Methods 0.000 claims description 3
- 230000009467 reduction Effects 0.000 claims description 3
- 238000010079 rubber tapping Methods 0.000 claims description 3
- 239000002893 slag Substances 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 238000007499 fusion processing Methods 0.000 claims description 2
- 229910001566 austenite Inorganic materials 0.000 abstract description 5
- 230000006870 function Effects 0.000 abstract description 4
- 238000003723 Smelting Methods 0.000 abstract description 3
- 238000005260 corrosion Methods 0.000 description 9
- 239000011651 chromium Substances 0.000 description 8
- 230000007797 corrosion Effects 0.000 description 7
- 229910001220 stainless steel Inorganic materials 0.000 description 7
- 239000010935 stainless steel Substances 0.000 description 7
- 229910052729 chemical element Inorganic materials 0.000 description 6
- 229910052804 chromium Inorganic materials 0.000 description 5
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 239000010941 cobalt Substances 0.000 description 3
- 229910017052 cobalt Inorganic materials 0.000 description 3
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- CVOFKRWYWCSDMA-UHFFFAOYSA-N 2-chloro-n-(2,6-diethylphenyl)-n-(methoxymethyl)acetamide;2,6-dinitro-n,n-dipropyl-4-(trifluoromethyl)aniline Chemical compound CCC1=CC=CC(CC)=C1N(COC)C(=O)CCl.CCCN(CCC)C1=C([N+]([O-])=O)C=C(C(F)(F)F)C=C1[N+]([O-])=O CVOFKRWYWCSDMA-UHFFFAOYSA-N 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 210000002615 epidermis Anatomy 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 235000011389 fruit/vegetable juice Nutrition 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 229910000734 martensite Inorganic materials 0.000 description 1
- 239000010813 municipal solid waste Substances 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/06—Deoxidising, e.g. killing
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/10—Handling in a vacuum
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/005—Modifying the physical properties by deformation combined with, or followed by, heat treatment of ferrous alloys
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/52—Ferrous alloys, e.g. steel alloys containing chromium with nickel with cobalt
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Forging (AREA)
- Heat Treatment Of Steel (AREA)
Abstract
The invention discloses a kind of manufacturing methods of ultrapure nuclear leve austenitic stainless steel large forgings, comprising the following steps: selects raw material and carries out purified treatment；Clean burner hearth and ladle；So that the raw material after purified treatment obtain the steel ingot of following mass percent: C≤0.08%, Si≤1.00%, Mn≤2.0%, S≤0.03% according to regulation ratio and regulation technique, P≤0.035%, 17.0%≤Cr≤19.0%, 9.0%≤Ni≤12.0%, Ti >=5*C%, Co≤0.05%, remaining is Fe；Regulated proportion refers to the proportion of each raw material, it is specified that technique refers to process conditions of the raw material successively through EF melting, VOD refining and ESR electroslag remelting；Steel ingot is carried out to suppress fast forging acquisition forging；Solution heat treatment is carried out to forging, then carries out stabilization processes.The invention has the advantages that the double deoxidizer that is added non-metallic inclusion grade, the large forgings produced can have the superior functions such as non-metallic inclusion is extremely low, austenite structure is stablized in strict control molten steel when smelting.
Description
Technical field
The present invention relates to stainless steel manufacturing technology fields, and in particular to a kind of ultrapure nuclear leve austenitic stainless steel large forgings
Manufacturing method.
Background technique
Stainless steel is not easy the steel to get rusty, actually a part of stainless steel, existing rustless property, and has acid resistance (anti-corrosion
Property).The rustless property and corrosion resistance of stainless steel are the formation due to oxidation film (passivating film) chromium-rich on its surface, but this rustless property
It is opposite with corrosion resistance.Experiments have shown that steel is in the weak medium such as big gas and water and in the Oxidants such as nitric acid, corrosion resistance
It is improved with the increase of chromium content in steel, when chromium content reaches certain percentage, the corrosion resistance of steel mutates, i.e., from easy
It gets rusty to being not easy to get rusty, it is never anti-corrosion to corrosion-resistant.There are many classification method of stainless steel.Classify by institutional framework at room temperature,
There are martensite type, Austenitic, ferrite and two phase stainless steel.Austenitic stainless steel production technology is functional, especially chromium
Austenitic stainless steel, using the conventional means of production special steel can successfully produce the plates of various regular sizes, pipe,
Band, silk, bar and forging and casting.
With the fast development of the industries such as nuclear industry, ocean engineering, the Service Environment of steel material is increasingly complicated, Yi Xiejing
Close components or special equipment may require material and be provided simultaneously with good corrosion resistance, inoxidizability and mechanical property, especially
It is that nuclear leve austenitic stainless steel requirement non-metallic inclusion is extremely low, this needs to design and researches and develops special austenitic stainless steel, with
Meet different requirements, but actually existing steel grade can not meet different requirements simultaneously.
Summary of the invention
According to the deficiencies of the prior art described above, It is an object of the present invention to provide a kind of ultrapure nuclear leve austenite stainless
The manufacturing method of steel large forgings, which is matched by the component of control steel ingot and forging method, using step
Heating carries out heats forged, to obtain nuclear leve austenitic stainless steel large forgings.
The object of the invention realization is completed by following technical scheme:
A kind of manufacturing method of ultrapure nuclear leve austenitic stainless steel large forgings, it is characterised in that the manufacturing method includes following
Step:
Chromic carbide iron, 0# nickel plate, pure titanium and ecosystem steel scrap is selected as raw material and to carry out purified treatment；
Clean burner hearth and ladle；
So that the raw material after purified treatment obtain the steel of following mass percent according to regulation ratio and regulation technique
Ingot: C≤0.08%, Si≤1.00%, Mn≤2.0%, S≤0.03%, P≤0.035%, 17.0%≤Cr≤19.0%, 9.0%≤Ni≤
12.0%, Ti >=5*C%, Co≤0.05%, remaining is Fe；The regulated proportion refers to the proportion of each raw material, the regulation work
Skill refers to process conditions of the raw material successively through EF melting, VOD refining and ESR electroslag remelting；
The steel ingot is carried out to suppress fast forging acquisition forging；
Solution heat treatment is carried out to the forging, then carries out stabilization processes.
Suppress the forging acquisition forging fastly to the steel ingot, detailed process is as follows:
Surface of steel ingot described in finishing；
The steel ingot is heated using step heating；
Completion, which is heated, and the steel ingot internal temperature is identical as surface temperature suppresses fast forging, forging ratio >=3 using FM method afterwards.
The specific requirement of the steel ingot is heated using step heating are as follows: when between 20 DEG C -560 DEG C, rise per hour
Temperature≤80 DEG C when between 560 DEG C -850 DEG C, heats up 120 DEG C per hour, when between 850 DEG C -1200 DEG C, heats up per hour
It 150 DEG C, is kept the temperature after being heated to 1200 DEG C.
The initial forging temperature for using FM method to be forged is for 1180 ± 10 DEG C, final forging temperature >=850 ± 10 DEG C, solid solubility temperature
1050±10℃；The temperature of the stabilization processes is 860 ± 10 DEG C.
It is added the double deoxidizer of following component: 4.5%≤Al≤5% in EF fusion process, 8%≤Si≤9%, 3.5%≤
Ca≤4%, 18%≤Mn≤20%, remaining is Fe；So that itself and oxide in molten steel, sulfide is formed steel slag, the later period heat of oxidation,
It skims three times before reduction period and tapping, removes the non-metallic inclusion in molten steel, purify molten steel.
When entering VOD vacuum refining furnace by molten steel after EF melting and being refined, degassing , Shi ﹝ H ﹞≤1.6ppm, ﹝ O ﹞≤
16ppm。
Carrying out purified treatment to the raw material, detailed process is as follows: being cleaned with 5% dilute sulfuric acid, then uses clear water
It is cleaned, is then dried.
The optimum organization of the steel ingot each component is as follows: 0.05%≤C≤0.07%, 0.50%≤Si≤0.60%, 1.60%≤
Mn≤1.80%, S≤0.010%, P≤0.015%, 17.8%≤Cr≤18.5%, 11.2%≤Ni≤11.8%, Ti=0.40%, Co≤
0.04%, remaining is Fe.
The invention has the advantages that the double deoxidizer that is added can non-metallic inclusion etc. in strict control molten steel when smelting
Grade, the large forgings produced have the superior functions such as non-metallic inclusion is extremely low, austenite structure is stablized.
Specific embodiment
Feature of the invention and other correlated characteristics are described in further detail by the following examples, in order to go together
The understanding of industry technical staff:
Embodiment: the present embodiment is specifically related to a kind of manufacturing method of ultrapure nuclear leve austenitic stainless steel large forgings, the manufacture
Method by the way that non-metallic inclusion grade in homemade double deoxidizer strict control molten steel is added, using step heating into
Row heats forged obtains large forgings, has the superior functions such as non-metallic inclusion is extremely low, austenite structure is stablized.
The manufacturing method of ultrapure nuclear leve austenitic stainless steel large forgings provided in this embodiment a kind of the following steps are included:
(1) raw material of high-purity cleaning: chromic carbide iron, 0# nickel plate, pure titanium and ecosystem steel scrap are selected；Due to wanting strict control
The content of cobalt in forging, therefore the lower 0# nickel plate of amount containing cobalt is selected, ecosystem steel scrap also needs to select the lower steel scrap of amount containing cobalt,
Ask no silt, without iron rust, without grease stain, pollution-free, Co≤0.05% from the large forgings for guaranteeing to refine on raw material.
(2) above-mentioned raw material are cleaned with 5% dilute sulfuric acid, removes iron rust, silt and the grease stain that may contain in raw material
Deng, then the sour juice stayed on raw material is washed off with clear water, then dried.
(3) due to usually remaining a small amount of molten steel on hearth wall and steel ladle, various elements, such as Co are contained in these molten steel
Deng, if the raw material of directly this steel of melting, these harmful elements will be brought into this steel grade, pollute, therefore in this steel grade of melting
Need first to clean burner hearth and ladle before raw material, specific cleaning process are as follows: first melting 2-3 furnace it is identical as this steel grade chemical component or
Similar steel grade is removed the harmful element being attached in the remaining molten steel on burner hearth and steel ladle completely using it.
(4) purified raw material are matched to scale, mode, electric arc is smelted using EF+VOD+ESR later
Furnace+vacuum refining furnace+electroslag remelting, makes it homogenize, detailed process is as follows: it is multiple that self-control being added during EF arc melting
Close deoxidier Mn-Si-Al-Ca, each component are as follows: 4.5%≤Al≤5%, 8%≤Si≤9%, 3.5%≤Ca≤4%, 18%≤Mn≤
20%, remaining is Fe, so that it through chemical combination is formed steel slag with oxide, the sulfide in molten steel, molten steel surface is floated on, in oxygen
It skims three times before later period change phase, reduction period and tapping, removes non-metallic inclusion, purify molten steel, make its oxide, sulfide
Summation≤4 grade, the content of strict control P make it below 0.015%, at the same control harmful elements Pb+Sn+Sb+As+Bi≤
0.05%；The refining of VOD vacuum refining furnace is poured by the molten steel after EF melting, deaerate , Shi ﹝ H ﹞≤1.6ppm, ﹝ O ﹞≤16ppm；Again
Through ESR electroslag remelting, 2 refinings reach homogeneous, obtain high-quality steel ingot.
The each component of steel ingot is as follows: C≤0.08%, Si≤1.00%, Mn≤2.0%, S≤0.03%, P≤0.035%, and 17.0%
≤ Cr≤19.0%, 9.0%≤Ni≤12.0%, Ti >=5*C%, Co≤0.05%, remaining is Fe；
Further, in order to obtain the steel of higher performance, each chemical element in aforementioned component can be carried out further
Optimum organization, intensified element C, Mn, Ni capping, plasticity toughness element Cr, Si, Ti take the middle upper limit, and S≤0.010%, P≤
0.015%, strict control harmful element Co≤0.04%, each component is as shown in table 1 below:
Table 1:
(5) the stainless steel ingot surface of acquisition is first subjected to polishing finishing cleaning, preferably progress machining, surface epidermis vehicle
Then light carries out step heating to it and is evenly heated, when between 20 DEG C -560 DEG C, heat up≤80 DEG C per hour, 560
It when between DEG C -850 DEG C, heats up 120 DEG C per hour, when between 850 DEG C -1200 DEG C, heats up 150 DEG C, be heated to per hour
It is kept the temperature after 1200 DEG C, every 2 inch thickness of soaking time is 1 hour.
(6) it carries out suppressing fast forging, initial forging temperature using FM method when steel ingot internal temperature and its surface temperature are essentially identical
For 1180 ± 10 DEG C, final forging temperature >=850 ± 10 DEG C, forging ratio >=3.
(7) solution heat treatment is carried out, solid solubility temperature is 1050 ± 10 DEG C, selects sufficiently large pond, makes forging in pond
Upper and lower, left and right are waved, and accelerate cooling using recirculated water or air blower air blast.
(8) stabilization processes are carried out, temperature is 860 ± 10 DEG C, to improve anti intercrystalline corrosion ability.
(9) it is processed by Machine Design drawing to obtain the large forgings of required shape.
(10) performance detection is tested for the property the ultrapure nuclear leve austenitic stainless steel large forgings of acquisition, test knot
Fruit is as shown in table 2 below:
Table 2:
The ultrapure nuclear leve austenitic stainless steel manufactured it can be seen from upper table 2 using manufacturing method provided in this embodiment
The indexs such as tensile strength, yield strength, elongation percentage, the contraction percentage of area and the ballistic work of large forgings are all satisfied in the industry
Performance indicator requirement.
Test result is as follows for non-metallic inclusion shown in table 3:
Table 3:
The non-metallic inclusion content for the large forgings produced it can be seen from upper table 3 with this law fully meets requirement.
In order to further verify influence of the proportion relation between each chemical element component to the properties of finished product, this reality
It applies example and provides following seven groups of samples, the chemical constituent of each group sample is as shown in table 4:
Table 4:
Performance detection is continued to above-mentioned seven groups of samples, the testing result of properties is as shown in table 5 below:
Table 5:
Upper table 5 can be seen that when the low lower limit of compositional range in this present embodiment of the proportion of chemical element each in forging, sample
The performances such as tensile strength, yield strength are not up to standard, when in the proportion of each chemical element in the present embodiment compositional range, sample
The performance of product is up to standard, and when the proportion of each chemical element is within the scope of proportion optimizing, the performance indicator of sample is with eachization
The increase for learning the proportion of element gradually becomes excellent and then and is gradually reduced, but when the proportion height of each chemical element group in this present embodiment
When dividing range limit, the performance of sample is not again up to standard.
The beneficial effect of the present embodiment is: the self-control double deoxidizer being added when smelting can be nonmetallic in strict control molten steel
Field trash grade, the large forgings produced have the superior functions such as non-metallic inclusion is extremely low, austenite structure is stablized, can
Meet the performance indexes of nuclear leve.
Claims (8)
1. a kind of manufacturing method of ultrapure nuclear leve austenitic stainless steel large forgings, it is characterised in that the manufacturing method include with
Lower step:
Chromic carbide iron, 0# nickel plate, pure titanium and ecosystem steel scrap is selected as raw material and to carry out purified treatment；
Clean burner hearth and ladle；
So that the raw material after purified treatment obtain the steel of following mass percent according to regulation ratio and regulation technique
Ingot: C≤0.08%, Si≤1.00%, Mn≤2.0%, S≤0.03%, P≤0.035%, 17.0%≤Cr≤19.0%, 9.0%≤Ni≤
12.0%, Ti >=5*C%, Co≤0.05%, remaining is Fe；The regulated proportion refers to the proportion of each raw material, the rule
Determine technique and refers to process conditions of the raw material successively through EF melting, VOD refining and ESR electroslag remelting；
The steel ingot is carried out to suppress fast forging acquisition forging；
Solution heat treatment is carried out to the forging, then carries out stabilization processes.
2. a kind of manufacturing method of ultrapure nuclear leve austenitic stainless steel large forgings according to claim 1, feature exist
In suppress the forging acquisition forging fastly to the steel ingot, detailed process is as follows:
Surface of steel ingot described in finishing；
The steel ingot is heated using step heating；
Completion, which is heated, and the steel ingot internal temperature is identical as surface temperature suppresses fast forging, forging ratio >=3 using FM method afterwards.
3. a kind of manufacturing method of ultrapure nuclear leve austenitic stainless steel large forgings according to claim 2, feature exist
In the specific requirement for heating the steel ingot using step heating are as follows: when between 20 DEG C -560 DEG C, heating≤80 per hour
DEG C, it when between 560 DEG C -850 DEG C, heats up 120 DEG C, when between 850 DEG C -1200 DEG C, heats up 150 DEG C per hour per hour,
It is kept the temperature after being heated to 1200 DEG C.
4. a kind of manufacturing method of ultrapure nuclear leve austenitic stainless steel large forgings according to claim 2, feature exist
In the initial forging temperature for using FM method to be forged for 1180 ± 10 DEG C, final forging temperature >=850 ± 10 DEG C, solid solubility temperature be 1050 ±
10℃；The temperature of the stabilization processes is 860 ± 10 DEG C.
5. a kind of manufacturing method of ultrapure nuclear leve austenitic stainless steel large forgings according to claim 1, feature exist
In the double deoxidizer that following component is added in EF fusion process: 4.5%≤Al≤5%, 8%≤Si≤9%, 3.5%≤Ca≤
4%, 18%≤Mn≤20%, remaining is Fe；It is set to form steel slag with oxide, sulfide in molten steel, in the later period heat of oxidation, reduction
It skims three times before phase and tapping, removes the non-metallic inclusion in molten steel, purify molten steel.
6. a kind of manufacturing method of ultrapure nuclear leve austenitic stainless steel large forgings according to claim 1, feature exist
When molten steel enters VOD vacuum refining furnace and refined after by EF melting, deaerate , Shi ﹝ H ﹞≤1.6ppm, ﹝ O ﹞≤16ppm.
7. a kind of manufacturing method of ultrapure nuclear leve austenitic stainless steel large forgings according to claim 1, feature exist
In carrying out purified treatment to the raw material, detailed process is as follows: being cleaned with 5% dilute sulfuric acid, then is carried out clearly with clear water
It washes, is then dried.
8. a kind of manufacturing method of ultrapure nuclear leve austenitic stainless steel large forgings according to claim 1, feature exist
It is as follows in the optimum organization of the steel ingot each component: 0.05%≤C≤0.07%, 0.50%≤Si≤0.60%, 1.60%≤Mn≤
1.80%, S≤0.010%, P≤0.015%, 17.8%≤Cr≤18.5%, 11.2%≤Ni≤11.8%, Ti=0.40%, Co≤
0.04%, remaining is Fe.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102676905A (en) * | 2012-06-18 | 2012-09-19 | 上海加宁新技术研究所 | Method for smelting ultra-pure austenite nuclear grade stainless steel |
| CN105441780A (en) * | 2015-11-25 | 2016-03-30 | 上海加宁新技术研究所 | Method for manufacturing large motor 1Mn18Cr18N nonmagnetic guard ring |
| CN107747027A (en) * | 2017-10-24 | 2018-03-02 | 上海申江锻造有限公司 | High resistivity, high magnetic permeability 1Cr12Mo martensitic stain less steel rotating shaft process for manufacturing forging |
| CN108866271A (en) * | 2018-08-08 | 2018-11-23 | 中国原子能科学研究院 | A kind of manufacturing method of high silicon titanium-containing austenitic stainless steel material pipe |
-
2019
- 2019-02-01 CN CN201910103260.4A patent/CN110029203A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102676905A (en) * | 2012-06-18 | 2012-09-19 | 上海加宁新技术研究所 | Method for smelting ultra-pure austenite nuclear grade stainless steel |
| CN105441780A (en) * | 2015-11-25 | 2016-03-30 | 上海加宁新技术研究所 | Method for manufacturing large motor 1Mn18Cr18N nonmagnetic guard ring |
| CN107747027A (en) * | 2017-10-24 | 2018-03-02 | 上海申江锻造有限公司 | High resistivity, high magnetic permeability 1Cr12Mo martensitic stain less steel rotating shaft process for manufacturing forging |
| CN108866271A (en) * | 2018-08-08 | 2018-11-23 | 中国原子能科学研究院 | A kind of manufacturing method of high silicon titanium-containing austenitic stainless steel material pipe |
Non-Patent Citations (1)
| Title |
|---|
| 刘锦云: "《工程材料学》", 30 November 2016, 哈尔滨工业大学出版社 * |
Cited By (15)
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